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Designing a ground source heat pump or biomass boiler system is without doubt the most important part of the project. Even with the best equipment, if the design is wrong, the system will be inefficient or even may not work at all.

At isoenergy we pride ourselves on having the UK’s best heat pump and biomass system design team. It is their ability that means isoenergy installations outperform the competition in system efficiency. Don’t just take our word for it, the Government’s own data proves it.

In our experience, many other installers do not have dedicated design staff let alone design teams so tend to use the manufacturers own designs for installing heat pumps and biomass boilers. In some circumstances this is perfectly acceptable practice. They did design the equipment after all! However, if we consider a more complex system with perhaps multiple heating targets or a tricky hot water demand, an off-the-shelf design will fall short of the efficiencies of a well-considered and designed system bespoke to that installation.

Why is design so important?

With regards to heat pump systems, on paper, they are very efficient often claiming a coefficient of performance of 3:1 or more. This means that for every kWh of electricity used by the heat pump, two more kWhs are collected from the heat source, be it water, ground or air. This gives a total of 3kWh of heat for your home and hot water. A heat pump system is only able to maintain high efficiencies if various factors are considered; first and foremost, the collector array needs to be of suitable size to avoid over extracting heat from the ground. This is the main reason we avoid coiled pipe in the array (Slinkies).

System efficiency is also governed by how much energy is used to circulate the glycol through the ground array. In many other installations we come across, we find a large pump has been added to the system to circulate glycol. At isoenergy, we have the know-how to design a system with minimal pressure drop so a much smaller circulation pump can be used. Obviously these pumps use electricity so by keeping the size down, we can save on running costs and contribute to a higher system efficiency.

Other factors our design team consider include suitable tank sizing, control configuration, integration with other energy sources. How the fluid moves in the pipes also impacts the transfer of heat so fluid dynamic modelling features heavily in their work.

How our design team works

The isoenergy design team uses a host of tools and software to enable them to calculate, measure and design the most appropriate system for any given scenario. The team is led by Peter Konowalczyk who has 22 years’ experience designing heating systems. His team of three bring a range of different skills to the mix including software and hardware design. The design team uses the very latest in software to design robust system schematics and render 3D representations of all the plantrooms. On top of the industry standards such as AutoCAD, Revit and AutoCAD P&ID the team uses custom tools designed themselves to calculate fluid dynamics and other parameters giving all isoenergy systems that extra bit of system efficiency that makes all the difference.

By choosing isoenergy to design and install your renewable energy project you can rest assured that you have the very best available team working with you to fulfil you requirements.

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